confint3： 2-Sided Confidence Interval (Extended Moodle Version)

转载自：http://feedproxy.google.com/~r/RBloggers/~3/VWSoNI7WG5k/

R/exams
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Exercise template for computing the 2-sided confidence interval (with extended Moodle processing) for the mean based on a random sample.

Description:

Computing the 2-sided confidence interval at 95% level for the mean based on a random sample. The exercise is a cloze with two numeric answers for the lower and upper bound of the confidence interval, respectively. Using the ‘verbatim’ clozetype for Moodle, the exercises yields 100% of the points for the correct solution based on t quantiles but still 50% for a partially correct solution based on normal quantiles.

Randomization:

Random numbers

Mathematical notation:

Yes

Verbatim R input/output:

No

(Note that the HTML output contains mathematical equations in MathML. It is displayed by browsers with MathML support like Firefox or Safari – but not Chrome.)

Demo code:

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library("exams")

exams2html("confint3.Rnw")
set.seed(1090)
exams2pdf("confint3.Rnw")

exams2html("confint3.Rmd")
set.seed(1090)
exams2pdf("confint3.Rmd")

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